furney



PATENTED MAY 18, 1869.

E. E. FURNEY.

MECHANICAL MOVEMENT.

W fLcmm West 96 din-lied fit-sins 13mm one,

s. FUI'RNIEY, or icHIcoPEE, AssACHusE'rTs..

LQtW8 .PGi6nt 2%. 90,254, dated m 18, 1869.

MOV'EIIBM.

Th Schedule referred tom these Letters mm me main in out; some.

; rei'erencebeing had to the accompan 'ing drawings, making a part of this specification, an to the letters and figures of reference marked thereon. 7 My invention is herein shown and described as applied to a Windlass, having a hollow cylinder,'as acon'- veuieut and practical illustration of its operationin one of .the numerous applications of which it is capa- In the drawings- Figure 1 is an end elevation'of said windla'ss,having my application applied thereto;

Figure 2 is a side elevation of the same;

Figure 3 is a vertical and axial sectional viewof the d cylinder-,gthc. contained shafland its appurtenant parts being shown entire; Figure 4 v is a vertical axial section through said shaft and parts attached-as shown in fig. 3, or an axial sectional view, made by 'the horizontal plane Z Z, in fig. 6', the shaft beingshown entire;

.Figure 5 is a horizontal carried upon the shait,,through the line Y Y, in fig. 3; and

, Figure v6 is a plan view of the shaft other parts, shown in the same relative position to the'standards 3 of the Windlass which they occupy in. fig. 3. a

Figure .7. I, II, III, show, respe'ctively,'a front,

,side, and rear view of an annular disk, having proj'ec:

'tions on the opposite sides, and .WhichQma-ybe denom- 'inated an annular key.

Figure 8 is an end view of said cylinder, the cap being shown as broken away, to display the'concaye gear attached to the interior of the cylinder, and the largest of the three gears upon the shaft.

Figure 9 is an end elevation of the shaft; and the, three gears which arecarTiedupon it, the position ofthe shaft relative'lytothe standards being as shown in fig. 3.

The nature of my invcntionconsists in the combination and arrangement of a su'flicient number ofsuch coacting parts, asare hereinafter described, to-

allow several diflereut rates of transmitted motion to be produced in the'same machine, or to allow the driving-shalt to revolve without communicating to the cylinder any motion whatever; and, further,.re-

, lates to the meau's by which the co-operating shown,'one adjustment of the coaoting parts requires twenty-five revolutions of the crank and main shaft al section of the parts v to revolve the drum of the nindlsss once, thus increasing the transmitted: power twenty-five times, less any loss by the friction of the ctr-operating In another adjustment, twelve and one-half revolutions of the main shalt produce a sin is rotation of thedrum, the rate of increase of power in one-half of the preceding rate; while the third ustment re-' quires but about four 1 and onefouxth revolutions of the shaft to revolve the drum once, being a'smaller loss of speed, or time,- and also. a less gain oi.

power. I

' The construction may be varied, so as to allow a greater number of adjustments than above given, and any desired rate of increase of power, within practical limits, may he obtained a The construction of my invention is as follows;

The journals of the driven cylinder 0' are supported in bearings iuthe two standards 8 S. 4 The ends of the cylinder are closed by heads 0 o,-

which project beyond the oylindenso as to form retaming-flanges at the ends, and the head 0 is removable, to allow access to the parts contained within the "cylinders.

Central apertures, with proper bushings, are formed in the heads 0 0, through which theImain shalt passes, these apertures being thebearings of the cylinder.

Bigidly attached to the inner face of the cylinderO' isthe toothed ring G, forming a concave, or internal gear, and having, inthiscase, fifty teeth. This ring is best located at a point near the middle of the length of the cylinder, to

equalize the strain 'npon, its'end bearings.

The main shaft is'continucus, and vhas at one end a rectangular head for receiving the eye of a crank, w,

or a pulley may be keyedrto it for receiving'the drivinqipower.

, pen the shaft areformed. the solid eccentric portions I J K, the thrust or eccentricity of I, relatively to'the'maiu shaflgbeing the least-of the three, while that of K is thegreatest,

smaller diameter than B,-aud having thirty-eight teeth,

is applied tothe'eccentric K.

The respective thickness of the three toothed rings, or gears A B 0, is such that the thrust oftheir sev- A metallic ring, A, the mas-mum of which isnearly'rectangular, fits upon the eccentrloI, so that the latter turns freely within the ring, and teeth simi- A similar ring, B, or greater thickness, but 6f less annular disk.

eral eccentrics, at each revolution of the main shaft,

will cause either of the gears which is in line with the concave gear'G, to mesh with it at one point in the revolution, 'as shown in fig. 3, where the gear B is represented as engaged with the concave gear G, and if the revolution of the main shaft be continued, one tooth after another of B, 'will' be thrown outward by the eccentric J, so as to mesh with the corresponding.

teeth of G.

It is necessary, that 'whilethe main shaft revolves,

the gears A B 0 should not revolve relatively to "the standards of themachine, but still'shonld be left free to move in and out relatively to .the axis of gthe'main shaft, with the eccentrics which carry them. 1

I will, therefore, describe the means which'I employ to prevent this revolution of the gears, and at the same time allow them freedom to follow the thrust of the eccentrics.

. I The sleeve E encloses the main shaft D, and has a collar, e, at its innerend, of a diameter a little less than the gear A.

Three circular recesses, s s? s, are formed in the sleeve, and a rod, R, having a footplat e, r, is arranged 'to have a vertical movement in ways out in the standard S.

A spiral spring,-set in a recess in the standard,

forces the enlarged end '1' of the rod upward, as a detent into one or the other of the recessesin the sleeve,

thus preventing the latter from revolving with the main shalt. H

' A longitudinalchannel extends along the line of s s s, so-that the sleeve is still prevented from turning when moved longitudinally.

The three recesses are so locatedothat when the detent is in the first 'recess's, the largest gear A will engage with the concave gear G, and when the sleeve is drawn out, so that the detent is in the second recess, the middle gear B will mesh with G, as is shown 1 in fig. 3, while if 'r be entered in the third recess s,

Projections are formed on the other keys in the same manner, and the three keys correspond nearlyin diameter to the three gears A B O; I

v A rectangularfchaunel is cut diametrically in the collar 0, to receive the projections d d on oneside of the ringrl, and a corresponding channel at aright angle to theformer, in the gear A, in which the projctiousd' d',,on the otherside of the ring 1, will slide.

. In like manner, the annular key 2 is placed between A Q the gears A and B, channels at a right angle to one another being formed in the adjacent faces of the two gears, to receive the projections on the opposite sides of'thekey 2. In the sameway, the key 3 read usted between-the gears B and O; a

. To retain these several parts in place upon the main shaft, the collar F is pinned to the shaft at the crank-end, and the collar F is also secured to the shaft beyond the third gear 0. I

The operation of the annular keys, in allowing the .gears freedom of motion relative to the eccentrics,

while preventing their revolution with the main shaft,

"can best be seen by removingthe' cylinder, and then replacing the main' shaft in its"bearings upon the -standards.

It will then be readily observed, that the described arrangement of the annular keys and channels pervmits the eccentrics to operate their respective gears freely, while the latter are still c'oupled by the sliding keys to the stationary sleev, and therefore do not revolv'e. a

It will also be evident that the end of each tooth of the gears A B G describes, during one revolution of the main shaft, a perfect circle, the radius of which will be equal to the eccentricity of that part of the shaft which carries. the gear. It is this constant evolution of circles by the .several teeth which successively engage with the teeth of the concave gear G, which causes the revolution of the cylinder 0', each successive tooth adding an increment of motion to the cylinder.

"Theprogress of thesurface of the cylinder at each revolution of the main shaft will, therefore, be equal to the diameter of one of the equal circles, which "are formed, as aforesaid, by the ends of the teeth of that gear, A, or B, 1 O, which-is at the time engaged with the gear'G on he inside of the cylinder.

, The operatiin of shifting the rate of speed is performed by sin ply sliding the main shaft in or out of the cylinder, until the detent r enters the properre-' cess in the sleeve.

In large machines, this sliding of the main shaft would requi:e the use of levers, or other common mechanical devices, and the rod R, worked by foot-power,

may be dispensed with, and'asmall lever, to be worked by hand, be substituted therefor.

'As it is sometimes desirable, with a light load, to a use the full rate of speed which is applied to the machine, I propose to-attach a'clntcb to the mainshaflz, wherebythe cylinder 0' may be driven directly by the shaft, without allowing the gears A-, B, O, and G, to mesh together.

7 It will be seen that the space between the teeth of i any two adiacentgears is suificient to allow the teeth of G to enter this space, and there remain without engaging with either A, B, or O. y

In this position of the parts, the main Bhaft'can be revolved without moving the cylinder, and the main shaft would necessarily be. brought .to this position, if it were to be coupled directly to the cylinder by a clutch or any similar device.

The use of any pawls upon the inain shaft, in the Windlass shown, for the purpose of .preventing any. backward movement, if the .crank should be released.

is unnecessary, inasmuch as the relation of the enacting parts is such, that while the cylinder is revolved by 'turning the main shaft,-the latter cannotbe re 'volved by turning the cylinder, which result is, in many applicationsof this mechanical movement, of great value, in simplifying the construction, andin preventing accidents to the machinery itself and to'those o eratingit. a

The same mechanism herein described may be applied'to many machines in which a complicated system .of gearing, or pulleys and belts, is now necessaryto obtain different rates of motion in the same machine, and maybe used with a vertical main shaft, as well as the horizontal one shown.

" Having de'scribed'my invention,

What I claim as new therein, and desire to secure by Letters Patent, isf 1. The combination of the cylinder, having a concave gear, G, applied thereto, main shaft D- having one ormore eccentric portions I J K, an a gear, v A, B, or 0', fox-each of such eccentrics, when such gears are left free to follow the thrust of their respective eccentrics, but are prevented from revolt-.- ing with the main shaft by means of the sleeve and annular keys, substantially as and for the purposes In witness whereof, I have hereunbo-setmy hand, specified. this 17th day of August, A. D. 1868.

2. The construction of the annular keys 1, 2, 3, in E. E. FURNEY. combination with the channelled rings A, B, or 0, car- Witnesses: ried lpon eccentrics, and with the stationary channelled disk, or 00112.! e, substantially as and for the pur- J P. BUCKLAND,

poses set. forth, E. J. SOMMEB. 

